20 ἀπεκρίθησαν οὖν οἱ γονεῖς αὐτοῦ καὶ εἶπαν · Οἴδαμεν ὅτι οὗτός ἐστιν ὁ υἱὸς ἡμῶν καὶ ὅτι τυφλὸς ἐγεννήθη ·